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P. G. SOMPS & F. A. WEISB.

PURIFYING AND PRBSERVING BEVERAGES. No. 367,938. Patented Aug. 9, 1887..

UNITED STATES PATENT OEEIcE.

PIERRE G. SOMPS AND FREDERICK A. \VEISE, OF SAhI FRANCISCO,

' CALIFORNIA.

PURIFYING AND PRESERVING BEVERAGES.

SPECIPIQATION forming part of Letters Patent No. 367,938, dated August 9, 1887.

Application filed January 6, 1887. Serial No. 293,6). (No model.)

To all whom it may concern..-

Be it known that we, PIERRE G. SoMrs and FREDERICK A. WEIsE, of the city and county of San Francisco, State of California, have invented au Improvement in Purifying and Preserving Beverages; and we hereby declare the following to be a full, clear, and exact descrip tion of the same.

Our invention relates to theart of purifying and preserving beverages; and our invention consists, essentially, in the introduction of foam or foam-generating compound into the vessel which contains the beverage and from which said beverage is drawn, the introduction of the foam or foam-generating compound being in such quantities and at such times as is necessary to completely fill the space in the bevcragevessel which is formed by the drawing off of said beverage as needed.

Our invention further consists in the proper compound by which the foam is generated, and also in the means or apparatus by which said foam or foam-generating compound is introduced into the beverage-containing vessel, all of which we shall hereinafter fully explain.

The object of our-invention is, as its titleimplies, to preserve such beverages which are likely to degenerate during the term of their use by reason of the formation of a space within the vessel, into which airfinds its way, thereby causing the beverage to lose its good qualities. This is particularly true of beer, and especially of lager, which, as is well known, rapidly grows flat when once tapped. By the introduction of foam this space, which is ordinarily filled by air, is entirely taken up by the foam, which is itself of an innocent character and which preserves the beverage from any deterioration.

Our invention is applicable to all kinds of beverages, effervescent or fermented or their opposites. A

By referring to the accompanying drawing, in which the figure shows the apparatus, it will be seen that A is a keg, which, for the purposes of this description, may be supposed to contain lager-beer. v

B is the faucetby which the beer is drawn oft.

Gis an ordinary siphon-bottle, the constructhrough the'discharge-nozzle 0.

tion and character of which need no further use for containing selt-zer-water, soda-water, and other similar drinks. It has a handle, 0, by which its valve is opened, thereby allowing the contents of the bottle to be forced In the top of the keg is let an entrance-faucet, D, which is connected with the discharge'spout 0' of the bottle by a tube or pipe, E.

In the bottle 0 is placed some of the foamgenerating compound, the character of which we shall presently describe; but for the broad principle of our invention it may be of any suitable character which will generate foam of sufficiently lasting qualities to serve the purpose in view.

The operation of this apparatus, as far as the principle of our invention is concerned, is as follows: As the beer is drawn from the fancet B for use, the operator, by manipulating the handle 0 of the bottle 0, allows the foamgenerating compound which is in said bottle and is under great pressure, as is usual in such cases, to be forced through the nozzle and connecting-pipe and through the entrance-faucet D into the keg or vessel. The foam thus introduced entirely fills the empty space of said keg or vessel which is left by the drawing 01f of the beer below, and, thus filling said space, it is obvious all air is excluded and the beverage is subject to no deterioration. On the contrary, the beer will keep its lively character until the last drop is used.

Now,we have found that in order to carry out our invention to the best advantage the foamgenerating compound should be of this character: It should consist of alcohol, an extract of hops or malt, and the ordinary soda or seltzer, all in the bottle and under pressure. The composition of a compound which we find successful in practice is substantially as follows: To-

one pint of the extract of hops or malt add one ounce of alcohol. Then with one and onehalf ounce of this usc-one quart of soda or seltzer. 7

We make our extract of hops by steeping the hops with water to the required strength. \Ve then add to this extract the alcohol and force the mixture into the bottle 0 in the usual manner, after which we force in the soda or seltzer. By soda or Seltzer we mean water charged with c arbonieacid gas, our object be- -ing to force by pressure the foam-producing compound into a keg .or barrel containing liquid also under pressure.

Soda or seltzer of itself, as is well known, is capable of forming foam as it passes from the bottle under the great pressure to which it is subjected; but this foam is not lasting enough for our purposes; but by mixing-it with the extract of hops or malt and alcohol the foam generated is of a very lasting character and serves'all the purposes in view, at the same time being innocent inits character, and even making, with the soda or seltzer, a drink which is not unpalatable of itself.

In the bottles G with this compound may also be introduced any suitable flavoring, such- 20 as honey, rose, mint, &c.

If desired, the foam may be introduced through the tapping or drawingoff faucet.

Having thus described our invention, what we claim as new, and desire to secure by Letters Patent, is-- I y The improvement in treating beverages confined under pressure,- consisting in drawing 01f a portion of the beverage, whereby a space is left in the containing-vessel free of the liquid, and then in introducing from without and under pressure into said space a foam-generating compound consisting of a mixture of alcohol, extract of hops ormalt, and water charged with carbonic-acid gas, whereby a foam is formed which fills said space and preserves the beverage, substantially as herein described.

In witness whereof we have hereunto se our hands.

PIERRE G. SOMPS. FREDERICK A. WEISE.

\Vitnesses:

S. H. NoURsE, H. (1. LEE.' 

